PUK may refer to:
Geographical edit
- PUK, or Busan–Gyeongnam Area, a metropolitan area in South Korea
Political edit
- Partia e Unitetit Kombëtar or National Unity Party, an Albanian political party
- Patriotic Union of Kurdistan, a Kurdish political party
Technological edit
- Pin Unlock Key or personal unblocking code (PUC), a code used in GSM mobile phones
- PUK welding, a precision welding system used in the jewellery industry
People edit
- Niels Kristian Iversen or PUK, Danish speedway-rider